Think back to the first day of classes. Did you plan ahead for what you were going to wear? Did you get the typical school supplies together? Did you try to find your classrooms ahead of time or look for the syllabus online? Did you look up your professors on an online professor evaluation site? Based on your answers to these questions, I could form an impression of who you are as a student. But would that perception be accurate? Would it match up with how you see yourself as a student? And perception, of course, is a two-way street. You also formed impressions about your professors based on their appearance, dress, organization, intelligence, and approachability. As a professor who teaches others how to teach, I instruct my student-teachers to really take the first day of class seriously. The impressions that both teacher and student make on the first day help set the tone for the rest of the semester.